The Average Salinity of Sea Water Is Approximately ________ Percent

question 76

Multiple Choice

The average salinity of sea water is approximately ________ percent of total mass.

• A) 3.5
• B) 5
• C) 7.5
• D) 10
• E) 20

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Definitions:

Unspecialized Cells

Cells that have not yet differentiated into specific cell types and thus retain the capability to become multiple kinds of cells, also known as stem cells.

Specific Fate

The pre-determined developmental trajectory of a cell or organism, often genetically controlled.

Homeobox Transcription Factors

Proteins that bind DNA and regulate the expression of genes crucial for the development and structural layout of an organism.

Homeodomains

DNA-binding motifs found in transcription factors that are crucial for the regulation of development and gene expression.